photos Flashcards
What is this
NSR
Whats going on
Sinus pause AKA arrest
whats going on
SA block
What’s going on
PAC
what’s going on
Ectopic Atrial Tachycardia (atrial foci)
What’s going on here
WAP wondering atrial pacemaker (the origin of the electrical charge is mocing around)
What’s going on
Multifocal Atrial Tachycardia
This one is just like the WAP but also has an increased HR
Whats going on
atrial flutter rate 250+
Whats going on
A fib
whats going on
Premature junctional contaction
whats going on
Junctional escape beat
The SA does not do what it’ supposed to do so another area takes over.
This is when a lower area of function becomes active because the higher areas are not doing what they should
Whats going on
Junctional Rhythm
This means the AV node is teh pacemaker
What’s going on
Accelerated junctional Rhythym
conduction starting in ventricles with no P waves noted (faster than 20-40)
What’s going on
PVC
What is going on
Idioventricular Rhythm
What’s going on
A fib
What’s going on
Escape vs PVC: the escape will be a longer R-R and the PVC will be shorter
What’s going on
Accelerated Idioventricular Rhythm
What’s going on
VTach – Fusion and Captured Beats
What’s going on
Torsade de Pointes
What’s going on
Ventricular Flutter
What’s going on
V- Fib
What’s going on
NSR
What’s going on
SA pause / arrest (longer than one beat) no big deal if < 2 seconds
SA Node fails to initiate an impulse
What’s going on
Sinoatrial (SA) Block
SA node initiates an impulse but the electrical activity is blocked from leaving the SA node resulting in the absence of P wave, QRS complex, and T wave.
what’s going on
(1st degree block increased PR)
First degree heart block demonstrates a long PR interval. This occurs because the delay through the AV node is too long due to slow conduction in the AV node. The remaining electrical system functions normally. All the P waves are conducted and are associated with a QRS complex.
Whats going on
2nd Degree AV Block – Mobitz I (Wenckebach)
“longer longer longer drop, low you have a Wenckebach”
In type I (Wenckebach), the PR interval increases with each heart beat until it is so long that the signal doesn’t reach the ventricles and the depolarization is “blocked” at the AV node. This beat will show a P wave with no QRS following it. Following the blocked (dropped) beat, the AV node starts again with a normal or near normal PR interval and the cycle repeats itself.
What’s going on
2nd Degree AV Block –Mobitz II
In type II, P waves are randomly blocked just below the AV node. The PR interval is constant, which contrasts with the type I block.
Whats going on
3rd degree heart block
If the QRS is narrow it originaes near the AV node it wil be narrow. If it’s wide it’s close to PRS.
Complete block of the AV node, Atria are paced by SA node, but impulse is blocked to ventricles.
Atria are pacing normally but the signals do not make it to ventricles thus you see P waves NOT associated with ventricular escape beats (wide QRS)
In third degree block, no P waves are conducted to the ventricles. The SA node generates atrial contractions and P waves. The P waves are 100% unrelated to the QRS’s. Because the ventricles are not being depolarized, an ectopic site within ventricular muscle becomes the new ventricular pacemaker. The ventricular rate is determined by the ventricular ectopic site while the atrial rate is determined by the sinus node. The ventricular beats do not travel retrograde through the AV. The atrial rate is usually faster than the ventricular rate.
Understand that both areas of the heart will be pacing REGULARLY, but at their own rates.
good review
just a good review
What’s going on
Wolf Parkinson White
This is asscoated with a delta wave (see how the beginning of the QRS is curved) This is because some of the signal is getting around the AV node and causing slightly early Ventricle deporlaization.
